Antifriction bearing



July 8, 9246 1,500,149

J. F. O'CONNOR ANTIFRICTION BEARING Filed July 9, 1923 Fig Patented July8, 1924.

- UNITED STATES 1,500,149 PATENT OFFICE.

JOHN F. OG'ONNOR, or CHIQAGO, ILLINOIS, assIGNoIt, BY MESNE ASSIGNMENTS,TO

w. H. MINER, me, A CORPORATION or DELAWARE.

ANTIFBICTION BEARING.

Application file d July 9,

Be it known that I, JOHN F. OCoNNoR, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in Antifriction Bearings,of which the following is a full, clear, concise, and exact description,reference being had to the accompanying drawings, forming a part of thisspecification.

This invention relates to improvements in anti-friction bearings.

An object of the invention is to provide an anti-friction bearing,especially adapted for railway cars, which bearing consists of few partseach of such design as to permit of economical manufacture, the partsbeing also so arranged that the anti-friction element proper isautomatically self-centered under the influence of gravity, whenrelieved of load. 7

The invention furthermore consists in the improvements in the parts anddevices and in the novel combinations of the parts and devices as hereinshown and described and made the subject matter of claim.

In the drawing forming a part of this specification, Figure 1 is avertical, sectional view taken through the ends of the body and To allwhom it may concern:

truck bolsters of a railway car showing my improvements in connectiontherewith. F igure 2 is a bottom plan view of the side hearing properillustrated in Figure 1. And Figure 3 is a vertical, sectional viewcorresponding gsubstantially'to the section line 3-3 of Figure 1. I

In said drawing, denotes the upper portion of a truck bolster of a carand 11 the underside of the opposed body bolster. In the instance shown,the improved bearing is attached to the body bolster and comprises,broadly, a retaining housing or base casting A; an anti-friction elementproper B; and a pair of counter-weights CC.

The housing A, preferably a malleable casting, is of more or lessbox-like form having a flat upper wall 12; curved end walls 1313, anddepending vertical side walls 1414, each of the latter including anoffset extension 15 having vertical end walls 1616, the latterfunctioning as vertical guides for the counter-weights as hereinafterdescribed. The housing A is provided with suitable lugs at its ends 17by which the housing is adapted to be riveted or 1923. Serial No.650,206.

otherwise rigidly secured to the bolster. Preferably, an insertedhardened wear plate 18 is employed, the latter being entered throughsuitable openings in the end walls of the housing and secured to thelatter by rivets 1919. V

The anti-friction element B is in the form of a cylindrical roller,although the same may take other shapes as will be apparent to thoseskilled in the art. Said anti-friction element B is centrally cored toloosely receive a pin 19 which is entered through suitable openings 20in the side wall of the housing before the wear plate 18 is inserted,after which, as apparent from an inspection of Figure 1, the pin 19drops below the openings 20 and the parts thus held in assembledrelation.

Two counter-weights C are employed, each of like construction. Each ofsaid counter-weights is preferably in the form of a substantiallyrectangular, thick, heavy plate of such horizontal dimension as to slidesmoothly between and be vertically guided by the vertical walls 16 ofthe lateral extensions in the side walls of the housing, hereinbeforereferred to. Each of said plates is provided with a double cam groove21, the portions of which converge upwardly to a centralpoint asindicated at 22. Said double cam grooves loosely receive the endportions of the pin 19, as clearly indicated in Figure 3, thecounter-weights being sup ported by said pin. In this connection, itwill be understood that the extreme ends of the pin 19 are, in turn,supported on the bottom horizontal edges 23 of horizontally elongatedrecesses 24 provided in the side walls of the housing. Thecounter-weights C are shown in their normal position in Figure 1 'and itwill be obvious that the same are adapted for upward movement within thehousing.

The operation of the bearing is as follows: When the anti-frictionelement is moved to either side of central position, as fo'r'instance,toward the right as viewed in Figure 1, the pin 19 carried thereby will'IIIOVG' in a horizontal line. As said pin so moves it is evident that itwill engage the upper edges of the sections of the cam recesses 21 atthe righthand side of the vertical center and thereby elevate saidcounterweights within the housing. When the load is removed from theanti-friction element, the counterweight-s descend vertically under theinfluence of gravity and the upper edges of the cam recessesautomatically force the pin 19 back to central position untilthe pinreaches the center in the double cam recesses 21. As will be obvious,

this compulsory return of the pin causes,

the anti-friction element to be carried back simultaneously therewith,thus restoring all of the parts to normal position and ready or a.succee ing actuation in ei her dire t: tiont In this co nection, it willhe observed that sh ng of he anti-friction e ement fro vib ation orjarring is substantially co pletely el m nated sin e t e anti r ct onelement cannot move Without elevating the counter-weights; end it inecessar to epp y considera e po er o effect the elevet oh of said. cunter-Weights.

I have herein shown nd des r ed het I. now consider the p e er ed mennof carrying out my inventi but t e sem i merely illustreti 'e and Icontempla e. a l c anges and modifications tha c me Within the scope, othe claim opp nded here 1 claim:- t

1. In an anti-friction hearing, the combi-- nation With a housingadapted to be secured to a bo ster or th like; of an antir cti elementWithin said. housing adap ed or olling movement o e t e side oi centralormal posi ion; a counter eight erticelly, slidably, mo nted on said o sng and a inge. dou e m recess therein metrically arranged with respectto the vertical center line thereof; and n axially li r posed projectioncarried by and movable bod ly with said elemen and xtended Withn saidrecess whereby; w en se d eleme t is moved to either side of centralposition, said counter-weight is vertically elevated and adapted to retrn the element to central position when said element is relieved ofload.

2-, In an anti-friction bearing, the combination with a housing adaptedto be secured to a bolster r th like; f an ant -friction e ement withinsaid housing dop ed r rolling movementyto either s de of no mol,

central position; a pair f counter-W ights vertically, e de y mo nted osaid housi g and located at opposite ends f said element, each of saidcounte eights he-ving-- a double cam recess therein symmetricallydisposed with respect to the er ic l cent ine there f; and axi lly diposed p ojem tion on the nds of sa d. e ment, s d pro jections ng exnded W thin said rece ses and o pe e e With thelette o ele ate thecounte g s hen s id el ment is moved to either side of central position.

3. In an anti-friction bearing, the comhination With a housing adaptedto be secured to a bolster or the like; of an antifriction cylindricalroller disposed Within said housing and adapted to roll to either sideof central position; a counter-Weight vertically, slidably mounted onsaid housing and having a double cam recess symmetrically arranged withrespect to the vertical center line thereof; and an axially disposedprojection carried by said roller and extending within s id ecess and cope ing With the latter to eifect elevation of said counter weight whenthe roller is moved to eith r side of central posit on t e. n en ir fr oi n ng, t combin tion with a. housing apted o e se cured to e bo ster ohe lik of on ent lfriotiony indrica roll d po ed i in id using and adopto ro to i h r side. of cent p s on he ei a pair of counter-Weights eachvertically slidz bly mounte it in said housi g, ach of s c untereights hving a d u e ce recess symmetrically disposed with respect to the verica center line o the ea ing; an xelly dispos d projec ion f om. the e dof sa d roller, s id p jectio s b g sp sed Withinsaid recesses andco=operable with the le er to e f ct elevat n o th co n Weights When theroller is moved in either side of ent al po ition.

5- In a side bea ng for r ilway ars, the omb nation with e housi g dpted to be secured to the underside of the body bolster andhavingdepending side Walls, each of said side Walls being provided witha horizontal ledge and a vertical guide on the in; nor face thereof; ofan anti-friction element disposed Within said housing and adapted forrolling movement to either side of central normal position therein; anda pair of counterqveights, one at each end of said element, and eachvertically slidably mounted in one of the vertical guides of thehousing, each of said counter weights having a double cam recesssymmetrically disposed with the Vertical center line of the ea ng, saideleme t ha ing ly extended projections at each end passing through saidcam recesses and supported on said, zon al dges- In Witness that I claimthe foregoing I have hereunto subscribed my name this 6th day of Ju y, 2

JOHN F. OCONNOR. Vitnesses:

FRANOES SAVAGE, HABRIETTE M. DEAMEB-

